Chalcis apiformis Fabricius, 1793:195, sex not indicated (Mus. Dom. Lund). - As Ancyloscelis apiformis: - Krombein et al., 1979Krombein, K.V., P.D. Hurd, D.R. Smith & B.D. Burks 1979. Catalog of Hymenoptera in America North of Mexico. Volume 2. Apocrita (Aculeata). Smithsonian Institution Press, Washington D.C. 1199-2209. (distribution); Ayala, 1988Ayala, R. 1988. Abejas silvestres (Hymenoptera: Apoidea) de Chamela, Jalisco, México. Folia Entomológica Mexicana 77:395-493. (distribution); Smith-Pardo, 2003Smith-Pardo, A.H. 2003. A preliminary account of the bees of Colombia (Hymenoptera: Apoidea): present knowledge and future directions. Journal of the Kansas Entomological Society 76 (2):335-341. (distribution); Yáñez-Ordóñez & Hinojosa-Díaz, 2004Yáñez-Ordóñez, O. & I. Hinojosa-Díaz 2004. La colección himenopterológica (Insecta) del Museo de Zoología Alfonso L. Herrera de la Facultad de Ciencias, UNAM, México. Acta Zoológica Mexicana (nueva serie) 20 (1):167-197. (distribution); Nava-Bolaños & Osorio-Olvera, 2022Nava-Bolaños, A. & L. Osorio-Olvera 2022. Estado del arte del conocimiento de biodiversidad de los polinizadores de México. Revista Mexicana de Biodiversidad 93:1-77. (distribution).
Ancyloscelis armatus Smith, 1854:367, ♂. ♂, Brazil (F. Smith). - Friese, 1904Friese, H. 1904. Neue Arten der Bienengattung Ancyloscelis Latr. 1825. (Hym.). Zeitschrift für systematische Hymenopterologie und Dipterologie 4:20-24. (distribution); Krombein et al., 1979Krombein, K.V., P.D. Hurd, D.R. Smith & B.D. Burks 1979. Catalog of Hymenoptera in America North of Mexico. Volume 2. Apocrita (Aculeata). Smithsonian Institution Press, Washington D.C. 1199-2209.:2118 ( listed as synonym of Ancyloscelis apiformis (Fabricius, 1793)). - As Ancyloscelis armata: - Cockerell, 1932Cockerell, T.D.A. 1932. Bees (Hymenoptera, Apoidea) collected at Chichen Itzá, Yucatan, by the Harvard expeditions of 1929-1930. Bulletin of the Brooklyn Entomological Society 27:9-17. (distribution); Michener, 1954Michener, C.D. 1954. Bees of Panamá. Bulletin of the American Museum of Natural History 104 (1):1-176. (distribution). - As Eucera armata: - Dalla Torre, 1896Dalla Torre, C.G. 1896. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus, X. Apidae (Anthophila). Sumptibus Guilelmi Engelmann, 1-643. (distribution). - As Leptergatis armata: - Cockerell, 1912Cockerell, T.D.A. 1912. Descriptions and records of bees. - XLV. Annals and Magazine of Natural History ser. 8 (10):21-31. (distribution); Lutz & Cockerell, 1920Lutz, F.E. & T.D.A. Cockerell 1920. Notes on the distribution and bibliography of North American bees of the families, Apidae, Meliponidae, Bombidae, Euglossidae, and Anthophoridae. Bull. Amer. Mus. Nat. Hist 42 (15):491-641. (distribution).
Nomia tarsalis Westwood, 1875:221 - Krombein et al., 1979Krombein, K.V., P.D. Hurd, D.R. Smith & B.D. Burks 1979. Catalog of Hymenoptera in America North of Mexico. Volume 2. Apocrita (Aculeata). Smithsonian Institution Press, Washington D.C. 1199-2209.:2118 ( listed as synonym of Ancyloscelis apiformis (Fabricius, 1793)).
Melissodes toluca ♀ Cresson, 1878:219, Michener, 1954Michener, C.D. 1954. Bees of Panamá. Bulletin of the American Museum of Natural History 104 (1):1-176.:110, Lectotype ♀. - Michener, 1954Michener, C.D. 1954. Bees of Panamá. Bulletin of the American Museum of Natural History 104 (1):1-176.:110 ( listed as synonym of Ancyloscelis armata Smith, 1854).
Exomalopsis chionocincta Cockerell, 1949:453, ♀. Holotype ♀, Honduras: Zamorano (U.S.N.M., No. 58511, leg. Adan Rivera). - Michener, 1954Michener, C.D. 1954. Bees of Panamá. Bulletin of the American Museum of Natural History 104 (1):1-176.:110 ( listed as synonym of Ancyloscelis armata Smith, 1854).